Lab: Making Decisions#
This lab will help you get comfortable with logic and if/else statements.
Part 1: Practice with Conditions#
This part will get you started writing the condition after the
if keyword. Before you start this section run the code in the cell below to setup values to work with in the rest of the section.
course = "Python Programming for Everyone" course_number = "cis-15" instructor = "Mike" year = 2020
Now fill in the variables in this cell with information about you and execute the cell:
first_name = "" birth_year = 2000 favorite_number = 0
1. Less than 100#
Print “Low” if your
favorite_number is less than 100
Print “Snakes!” if
course contains the word “Python”
3. No Snakes!#
Print “No Snakes!” if
course does not contain the word “Python”
4. Same, Same#
Print “Same” if you have the same first name is the instructor.
Print “VOTE!” if you are 18 years old or older.
6. Yes or No#
Print “Yes” if your name starts with the letter “L”, “No” otherwise.
Hint: Google “Python string startswith”
7. Are you a Millenial?#
Print “Millenial” if
birth_year is between 1981 and 1996 (including those years). Print “older” if you are older and “younger” if you are younger than a Millenial.
Part 2: More Complicated Conditions#
This part will challenge you to create more complicated
if statements with
1. Talking About Your Generation#
Build on your Millenial program with information from Wikipedia. According to the page here’s what generation people belong to:
Baby Boomers: 1946 - 1964
Generation X: 1965 - 1980
Millenials: 1981 - 1996
Generation Z: 1997 - 2012
My apologies if you’re older than 75 or younger than 10. I didn’t mean to exclude you, only limit how much people had to type for this question! Write a program that prints a generation based on
Be sure to test your program by changing ``birth_year``!
2. Reacting to input#
Write a program that uses a widget to input a word.
If the word starts with “X” or “Y”, print “=== X, Y ===”
If the word starts with “M” or “N”, print “=== M, N ===”
If the word equals “Mike”, print “=== Instructor ===”
If the word equals your name, print “=== Me ===”
If the word doesn’t match any of the above, print “=== No Match ===”
3. Draw a Shape#
Write a program that draws a triangle or a square based on a Pulldown widget. The program should have a numerical widget to specify the length of the triangle or square.
Part 3: Decisions in Functions#
Now let’s combine
if statements and functions. This is a powerful combinataion so it’s good to get practice!
1. Convert your Generation Answer#
Start with the answer to question 2.1. Put the code into a function called
get_generation that takes one argument
year and returns the generation of a person born in that year.
year(int) - The year a person was born
Returns: (string) - The generation a person is in
2. Compute a Letter Grade#
Write a function called
grade_letter_percent that takes one input
percent and returns the grade letter given for that percentage.
percent- A grade percentage.
The grade letter (e.g. “A”, “B”, “C”)
3. Improved Letter Grade#
grade_letter_percent function so that it calculates the percentage based on a person’s total score in points and the points possible on an assignment.
score_points- The grade for an assignment in points
total_points- The total points available for the assignment
The grade letter (e.g. “A”, “B”, “C”)
4. Plus and Minus#
grade_letter_percent function again to include
- grades. A
+ grade is given to the highest percent grade in the category, for example 99% is an A+, 89% is a B+, etc. A
- grade is given to the lowest grade in the category, for example 90% is an A-, 80% is a B-, etc.
grade- The grade in points
total- The total points for the assignment
The grade letter (e.g. “A+”, “A”, “A-” “B+”)